+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15290 (1991 TF1) Classification: Main-belt Asteroid          SPK-ID: 2015290 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1395343816024188 3.7754e-08   a 3.17757945489991 2.4625e-08 au q 2.7341978706679 1.2638e-07 au i 17.69081538359057 4.8942e-06 deg node 170.4653187637442 1.4291e-05 deg peri 275.4620057733779 2.2928e-05 deg M 337.7081140670845 1.8301e-05 deg tp 2459128.611278842932 (2020-Oct-06.11127884) 0.00010574 TDB period 2068.916937860165 5.66 2.405e-05 6.585e-08 d yr n .1740040856218907 2.0227e-09 deg/d Q 3.62096103913192 2.8061e-08 au   Orbit Determination Parameters    # obs. used (total)      1367      data-arc span      10340 days (28.31 yr)      first obs. used      1991-10-12      last obs. used      2020-02-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48534      source      ORB      producer      Otto Matic      solution date      2020-Feb-22 21:15:18   Additional Information  Earth MOID = 1.82079 au   Jupiter MOID = 1.76777 au   T_jup = 3.112  [ hide covariance matrix ] Orbital Elements at Epoch 2457063.5 (2015-Feb-10.0) TDB Reference: JPL 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1356563322637954 3.7828e-08   q 2.747864469492524 1.2603e-07 au tp 2457062.350980007279 (2015-Feb-08.85098001) 0.00010238 TDB node 170.5280213446284 1.4276e-05 deg peri 276.1215104653068 2.3297e-05 deg i 17.69015112877416 4.8932e-06 deg   Orbit Determination Parameters    # obs. used (total)      1367      data-arc span      10340 days (28.31 yr)      first obs. used      1991-10-12      last obs. used      2020-02-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48534      source      ORB      producer      Otto Matic      solution date      2020-Feb-22 21:15:18   Additional Information  Jupiter MOID = 1.76777 au   T_jup = 3.112  Orbit Covariance (6×6)   e q tp node peri i e 1.430927651057945E-15 -4.701654534721453E-15 -6.022421872796516E-13 3.02653009989199E-15 -9.85340176296834E-14 -4.338416094418792E-15 q -4.701654534721453E-15 1.588453658526603E-14 2.200513481990393E-12 -1.009275170517987E-14 3.643047334884759E-13 1.647662343205539E-14 tp -6.022421872796516E-13 2.200513481990393E-12 1.04812628594326E-8 -4.002813734865793E-12 1.909412141312468E-9 7.016218050372885E-12 node 3.02653009989199E-15 -1.009275170517987E-14 -4.002813734865793E-12 2.038016335390483E-10 -1.946021661447292E-10 1.272641154033814E-11 peri -9.85340176296834E-14 3.643047334884759E-13 1.909412141312468E-9 -1.946021661447292E-10 5.427411405745525E-10 -1.082633371400551E-11 i -4.338416094418792E-15 1.647662343205539E-14 7.016218050372885E-12 1.272641154033814E-11 -1.082633371400551E-11 2.394334595930179E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.1   n/a MPO381385   diameter diameter 13.309 km 0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 14.33958 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.] geometric albedo albedo 0.069   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15290 (1991 TF1)          Discovered 1991-Oct-12 by McNaught, R. H. at Siding Spring Reference: 20000621/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1991 TF1 = 1999 CU4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-13 05:42 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin